Product Details:
| Minimum Order Quantity | 25 Piece |
| Material | Stainless Steel |
| Connection Type | Compression |
| Material Grade | SS 304 |
| Connector Type | THREADED |
| Steel Grade | 304 |
| Usage/Application | Chemical Fertilizer Pipe |
| Size | 16 mm |
| Pressure Rating | 3000 psi |
| Connection | Male |
| Application | Instrumentation, Steam Line, Chemical Line, Food Grade, Hydraulic Line |
| Thread Size | 1/2" NPT (M) X 16 MM Od Male Connector |
| Color | Silver |
| Packaging Type | AS PER CLINTE REQURED |
| Seal Material | Metal To Metal |
| Design | HEXAGONAL |
| Diameter | 16 MM OD |
| Brand | KALPATARU |
| Surface Finish | POLISHED |
| Tube O.D. T | 16 MM OD |
| Maximum Working Pressure | 3000 PSI |
Stainless Steel Grades: 304 | 304L | 316 | 316L
Additional Information:
Product Details:
| Minimum Order Quantity | 150 Piece |
| Size | 1/4 inch |
| Size/Diameter | 1 inch |
| Material | Stainless Steel 304 |
| End Connection | Tube x Female NPT |
| Working Pressure | Up to 100 bar |
| Shape | Straight |
| Surface Finish | Natural |
| Thread Type | NPT |
| Temperature Range | -40 to 200°C |
| Media | Air, Gas, Chemical, Hydraulic Oil, Water |
| BRAND | Kalpataru Pipe & Fittings |
| TYPE | Double Ferrules Tube Fitting |
| MATERIAL GRADE | SS304 |
| Color | Silver |
A Stainless Steel Double Ferrule Tube Fitting is a high-performance, precision-engineered fitting used to create a leak-tight, secure connection in instrumentation and process tubing systems — particularly in high-pressure, high-temperature, and corrosive environments.
🔧 What It Is:Double ferrule tube fittings use two ferrules — a front and a back ferrule — to seal and grip the tube:
Front Ferrule: Creates a leak-tight seal on the tubing and fitting body.
Back Ferrule: Provides tube grip by swaging (compressing) onto the tubing.
They are widely used in critical applications where leak-free performance is essential.
📐 Key Features:| Property | Specification |
|---|---|
| Material | Stainless Steel 316 (standard), sometimes 304 |
| Tube Sizes | 1/16" to 2" (imperial), 2 mm to 50 mm (metric) |
| Thread Connections | NPT, BSPT, BSPP, ISO, or SAE male/female threads |
| Pressure Rating | Up to 3,000 PSI (depends on size, wall thickness, and manufacturer) |
| Temperature Rating | Up to 1200°F (648°C) with SS316 |
| Standard Brands | Swagelok®, Parker A-LOK®, kalpataru |
Leak-free seal under high pressure and vibration
Easy installation — no welding or soldering required
High reliability — ideal for critical instrumentation lines
Reusable and remakable without losing integrity
Excellent corrosion resistance, especially with SS316
Vibration-resistant due to secure tube grip
Instrumentation and control systems
Oil & gas (offshore and onshore)
Chemical and petrochemical processing
Power plants and nuclear systems
Analytical and laboratory equipment
Hydrogen, oxygen, and high-purity gas lines
| Fitting Type | Description |
|---|---|
| Straight Union | Connects two tubes of same size |
| Reducing Union | Connects two tubes of different sizes |
| Male/Female Connectors | Tube to threaded ports (NPT/BSP) |
| Elbows/Tees/Crosses | Change direction or branch lines |
| Bulkhead Unions | For panel mounting |
| Caps and Plugs | Close off tubing ends or ports |
Additional Information:
Product Details:
| Minimum Order Quantity | 10 Piece |
| Tube Size | 3/8 inch |
| Material | Stainless Steel |
| Size/Diameter | 0.5 inch |
| Ferrule Type | Double Ferrule |
| Material Grade | SS 316 |
| Usage/Application | Chemical Fertilizer Pipe |
| End Connection | Tube x Tube |
| Size | 25 mm |
| Working Pressure | Up to 100 bar |
| Thread Type | Metric |
| Media | Gas, Oil, Chemical, Air |
| Surface Finish | Electro Polished |
| BRAND | KALPATARU |
| THREAD | NPT |
Twin ferrule fittings are a type of compression fitting widely used to connect tubes in various industries like instrumentation, hydraulics, and process piping. The design typically consists of two ferrules—a front ferrule and a back ferrule—that create a strong, leak-tight seal on the tube when tightened.
What is a Tube Union in Twin Ferrule Fittings?Tube Union is a fitting used to join two lengths of tube together in a straight line.
It typically consists of two threaded ends where tubes are inserted and compressed using twin ferrules.
The union provides a removable connection that can be disassembled without cutting the tube.
Leak-proof: The twin ferrule design ensures a secure, metal-to-metal seal.
Reusable: Can be taken apart and reused multiple times without loss of sealing performance.
Material: Commonly made of stainless steel, brass, or other corrosion-resistant metals.
Applications: Used in high-pressure systems, chemical, pharmaceutical, and instrumentation setups.
Additional Information:
Product Details:
| Connector Type | Straight |
| Steel Grade | SS304L |
| Connection Type | Compression |
| Size | 3/8 inch |
| Pressure Rating | 3000 psi |
| Application | Instrumentation, Chemical Line, Hydraulic Line, Steam Line, Food Grade |
| Surface Finish | Polished |
| Seal Material | Metal To Metal |
| Brand | KALPATARU PIPE & FITTINGS |
A parallel male stud connector is a pneumatic or hydraulic fitting used to connect a male-threaded tube or pipe to a female-threaded port. It typically features parallel threads (as opposed to tapered) for precise mechanical connection, often used in instrumentation, process, or pneumatic systems. Made from stainless steel, it offers high corrosion resistance and durability.
Typical Technical Specifications| Parameter | Typical Value |
|---|---|
| Material | SS 304 / SS 316 Stainless Steel |
| Type | Parallel Male Stud Connector |
| Thread Type | Parallel threads (BSPP, NPSM, or ISO parallel threads) |
| Size Range | 1/8″ – 1″ nominal diameter |
| Pressure Rating | Up to ~6000 psi (depending on size and system design) |
| Temperature Range | –20 °C to +200 °C |
| Seal | Metal-to-metal contact or optional PTFE seal for leak-proof connection |
| Standards | ASTM A182 / A276 (material), ISO 228 / ISO 7-1 for threads |
| Finish | Smooth, corrosion-resistant stainless steel |
| Applications | Instrumentation panels, pneumatic systems, hydraulic lines, process piping, chemical plants |
Parallel Threads: Ensures precise fitting without thread taper; typically sealed with an O-ring or PTFE tape if required.
High Corrosion Resistance: SS 316 preferred for aggressive environments.
Versatile: Can be used in instrumentation, process, or pneumatic applications.
Compact Design: Saves space while maintaining a strong, leak-tight connection.
Product Details:
| Size | 1/4 inch |
| Material | Stainless Steel 316 |
| End Connection | Tube x Male NPT |
| Working Pressure | Up to 100 bar |
| Shape | Straight |
| Surface Finish | Natural |
| Thread Type | NPT |
| Temperature Range | -20 to 120°C |
| Media | Air, Chemical, Gas, Hydraulic Oil |
| Brand | KALPATARU |
Instrumentation lines for pressure, temperature, or level transmitters
Chemical and petrochemical plants
Oil & gas instrumentation and hydraulic systems
Laboratory and analytical systems
High-temperature and high-pressure fluid lines
Cut tubing square and remove burrs
Insert tubing fully into the connector body
Tighten the nut according to manufacturer torque specs
Ensure tubing is straight and properly aligned
Optional: Pressure or leak test after installation
| Feature | Specification |
|---|---|
| Brand | KALPATARU |
| Type | Double Ferrule Tube Connector |
| Material | SS304 / SS316 / Inconel |
| Tube OD | 1/16″ – 1/2″ |
| Tube Wall | 0.028″ – 0.065″ |
| Thread | Optional NPT / BSPT / ISO |
| Pressure Rating | Up to 6000 psi |
| Temperature | −50 °C to 925 °C (SS316), higher for Inconel |
| Standards | ASTM A182/A403, ISO 8434-1, MSS SP-99 |
| Application | Instrumentation, chemical, petrochemical, oil & gas |
I can also create a detailed labeled diagram of a KALPATARU double ferrule connector showing:
Tube insertion
Front ferrule (seal)
Back ferrule (grip)
Nut
Connector body
Product Details:
| Connector Type | Straight |
| Size/Diameter | 1 inch |
| Steel Grade | SS304 |
| Material | SS |
| Connection Type | Female Thread |
| Size | 1/4 inch |
| Elbow Bend Angle | 90 degree |
| Thread Standard | NPT |
| Working Pressure | 210 bar |
| End Connection Type | Threaded |
| Usage/Application | Gas Pipe |
| Elbow Type | Long Radius |
| Swivel Angle | 90 degree |
| Body Type | Straight |
KALPATARU compression tube fittings are double ferrule-type fittings which provide
leak-proof, torque-free seals at the tubing connection.
They provide safety and eliminate hazardous leaks of fluids in the
instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems
|
Types |
Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
|
Equivalent To |
SWAGELOK, PARKER, DK-LOK, HOKE |
|
Grade |
SS304 & SS316 |
|
Sizes |
1/8’’ to 2’’ and 3mm to 50mm |
|
Ends |
Threaded, Welding, JIC |
|
Pressure Rating |
1000 Psi, 3000 Psi, 6000 Psi, and 10000 Psi |
|
Threads |
NPT, BSPT, and BSP |
|
HS CODE |
73072900 |
Product Details:
| Size | 3/8 inch |
| Material | Duplex Steel |
| End Connection | Tube x Tube |
| Working Pressure | Up to 100 bar |
| Shape | Straight |
| Surface Finish | Natural |
| Thread Type | NPT |
| Temperature Range | -20 to 120°C |
| Media | Air, Gas, Chemical, Water, Hydraulic Oil |
KALPATARU compression tube fittings are double ferrule-type fittings which provide
leak-proof, torque-free seals at the tubing connection.
They provide safety and eliminate hazardous leaks of fluids in the
instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems
|
Types |
Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
|
Equivalent To |
SWAGELOK, PARKER, DK-LOK, HOKE |
|
Grade |
SS304, SS316, DUPLEX, INCONEL |
|
Sizes |
1/8’’ to 2’’ and 3mm to 50mm |
|
Ends |
Threaded, Welding, JIC |
|
Pressure Rating |
1000 Psi, 3000 Psi, 6000 Psi, and 10000 Psi |
|
Threads |
NPT, BSPT, and BSP |
|
HS CODE |
73072900 |
Product Details:
| Fitting Type | Reducer |
| Connector Type | Reducer |
| Steel Grade | SS304 |
| Material Grade | SS 304 |
| Connection Type | Socket Weld |
| Size | 3/8 inch |
| Schedule | SCH 40 |
| End Connection | Socket Weld |
| Pressure Rating | 3000 psi |
| Application | Hydraulic Line, Chemical Line, Instrumentation, Steam Line, Food Grade |
| Surface Finish | Polished |
| Seal Material | Metal To Metal |
| Standard | ASTM |
| Brand | KALPATARU |
Socket Weld Connector with Nut & Ferrule is a hybrid fitting that allows:
Pipe insertion and fillet welding on one end (socket weld side)
Tubing connection via compression fitting on the other end using nut and ferrule
Purpose:
Connect a welded pipe to instrument tubing (e.g., ¼″, ⅜″, ½″ SS tube)
Ensure a leak-proof, high-pressure connection in instrumentation and small-bore process systems
Body: Stainless Steel 304 (SS304)
Nut & Ferrule: SS304 or SS316 (for higher corrosion resistance)
Properties:
Excellent corrosion resistance
Good mechanical strength
Temperature tolerance up to ~870 °C
Optional: SS304L for improved weldability
| End | Type | Description |
|---|---|---|
| Pipe End | Socket Weld | Pipe is inserted into the socket and fillet welded |
| Instrument/Tube End | Compression | Nut compresses ferrule onto tubing, creating leak-tight seal |
Key Feature: This design combines permanent welded connection (pipe) with removable, leak-tight tubing connection (instrument line).
📏 4. Typical SizesPipe Side (Socket Weld): ½″ – 2″ NPS
Tube Side (Nut/Ferrule): ¼″, ⅜″, ½″ O.D common for instrumentation tubing
Standards: Socket weld per ASME B16.11, nut/ferrule per ISO 8434 or ASTM A182
Notes: Size selection depends on system pipe size and instrument tubing size.
🌡️ 5. Pressure & Temperature| Parameter | Range |
|---|---|
| Working Pressure | Up to 6000 psi (depending on size) |
| Temperature | −50 °C to ~870 °C (SS304, welding & media dependent) |
Nut & Ferrule: Rated for high-pressure instrument tubing (up to 6000 psi for SS316 ferrule fittings)
🧰 6. StandardsSocket Weld: ASME B16.11 (for forged fittings)
Nut & Ferrule / Compression Side: ISO 8434 / ASTM A182
Welding: ASME Section IX
Material Certification: ASTM A182 / A403
Product Details:
| Size | 16 mm |
| Application Type | Chemical Fertilizer |
| Connection | Double Ferrule |
| Diameter | 0.5 inch |
| Brand | KALPATARU |
| Material Grade | 316 |
| Pressure | 150 bar |
| Material | Stainless Steel |
| Fitting Type | Bulkhead |
KALPATARU compression tube fittings are double ferrule-type fittings which provide
leak-proof, torque-free seals at the tubing connection.
They provide safety and eliminate hazardous leaks of fluids in the
instrumentation field for a process, pressure, hydraulic, and other applicable tubing systems
|
Types |
Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
|
TYP YOF FITTINGS |
ELBOW, TEE, UNION, MALE CONNECTOR, FEMALE CONNECTOR |
|
Equivalent To |
SWAGELOK, PARKER, DK-LOK, HOKE, KALPATARU |
|
Grade |
SS304, SS316, DUPLEX,SUPER DUPLEX,MONEL |
|
Sizes |
1/8’’ to 2’’ and 3mm to 50mm |
|
Ends |
Threaded, Welding, JIC, |
|
Pressure Rating |
1000 Psi, 3000 Psi, 6000 Psi, and 10000 Psi |
|
Threads |
NPT, BSPT, and BSP |
|
HS CODE |
73072900 |
|
APPLICATIONS |
OIL,GAS,PETROCHEMICALS INDUSTRIES,REFINERYS,HYDROLICLINE |
Product Details:
| Minimum Order Quantity | 10 Piece |
| Tube Size | 1/2 inch |
| Female Thread Size | 1/2 inch |
| Connection Type | Ferrule |
| Size/Diameter | 0.5 inch |
| Size | 1/2 inch |
| Material | SS |
| Type of Tee | Straight |
| End Connection Type | Threaded |
| Thread Type | NPT |
| Usage/Application | Chemical Handling Pipe |
| Usage | Hydraulic, Pneumatic, Instrumentation, Gas Line |
| Thread Size | 1/2" NPT F |
| Connection | TUBE TO THREADED |
| Plating | Nickel Plated |
| Grade | 304,316 |
| Working Pressure | 10 bar |
| Surface Finish | Mill Finished |
| Body Shape | Elbow Branch |
| Brand | KALPATARU |
| Technics | Forged |
| Valve Option | Yes |
Type: Tee fitting with three female threaded ports (typically NPT or BSP).
Material: Stainless Steel (usually SS304 or SS316).
Design:
One inlet and two outlets (or vice versa), shaped like a “T”.
All ends are internally threaded (female), allowing threaded pipe connection.
The branch is at 90° to the run.
1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"
Plumbing and piping systems
Water supply and distribution
Compressed air and gas systems
Food and beverage lines
Petrochemical and chemical systems
Instrumentation and control
| Feature | Description |
|---|---|
| Thread Type | NPT (National Pipe Thread) or BSP (British Standard Pipe) |
| Corrosion Resistance | Excellent, especially with SS316 in marine or chemical settings |
| Pressure Rating | Often rated up to 1000–3000 PSI, depending on size and manufacturer |
| Standards | ASME B16.11 (for forged fittings), or ASTM A182 (for bar stock) |
Additional Information: